Soft tissue paradigm based Treatment planning in skeletal class III.

Autor: Kim Y; Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea., Song SI; Department of Oral and Maxillofacial Surgery, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea., Lee SH; Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea., Sim HY; Department of Dentistry, SMG-SNU Boramae Medical Center, Seoul, South Korea., Kim YH; Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea., Chae HS; Department of Orthodontics, Institute of Oral Health Science, Ajou University School of Medicine, Suwon, South Korea. hwasungchae@ajou.ac.kr.
Jazyk: angličtina
Zdroj: Clinical oral investigations [Clin Oral Investig] 2024 Nov 26; Vol. 28 (12), pp. 657. Date of Electronic Publication: 2024 Nov 26.
DOI: 10.1007/s00784-024-06062-x
Abstrakt: Objectives: This study aimed to propose guidelines for the indications of non-extraction, extraction camouflage treatment, and orthognathic surgery by comparing the degree of soft tissue improvement effects. This comparison focused on changes in CKHA, a soft tissue indicator corresponding to the major hard tissue indicator, ANB.
Materials and Methods: Sixty-six patients, 25 males and 41 females, aged between 18 and 50 years and diagnosed with skeletal Class III malocclusion (ANB < 0°), were enrolled in the study. Participants were categorized into three groups based on the treatment approach: G1, non-extraction (n = 20); G2, extraction (n = 20); and G3, orthognathic surgery (n = 26). To assess variations in treatment outcomes, measurements derived from lateral cephalometric radiographs obtained before and after treatment were analyzed and compared across the different treatment methods.
Results: Significant differences were observed in the ANB between the G1 and G2/G3 groups. However, no significant differences were observed in CKHA levels after treatment. Furthermore, in G2, the CKHA approached the normal range at -1.8° (normal range: -2.0°), suggesting that soft tissue responses can normalize despite minimal changes in the skeletal structure.
Conclusions: Although surgery resulted in the most significant skeletal changes, both camouflage groups demonstrated distinct advantages in the soft tissue paradigm. In G2, a noticeable posterior movement of the lower lip was observed along with a corresponding posterior shift in the soft tissue B point.
Clinical Relevance: This study provides guidelines for non-extraction, extraction and surgical treatment selection aimed at achieving soft tissue objectives.
Competing Interests: Declarations. Consent for publication: Not applicable. Competing interests: The authors declare no competing interests. Disclosure of potential conflicts of interest: The authors declare that they have no conflict of interest. Ethical approval: All human research procedures were followed in accordance with the ethical standards of the committee responsible for human experimentation (institutional and national), and with the Helsinki Declaration of 1975, as revised in 2013. This study was reviewed and approved by the Institutional Review Board (IRB) of Ajou University Hospital (IRB no.: AJIRB-MED-MDB-2022-388). The IRB Committee waived the requirement for obtaining patient informed consent.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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